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authorSreenivasa Honnur <Sreenivasa.Honnur@neterion.com>2008-02-20 17:07:51 -0500
committerJeff Garzik <jeff@garzik.org>2008-03-17 07:49:26 -0400
commit6cfc482b4b1c512d81712eba41fa324b24e5e7b2 (patch)
treed288e4f8a08b22507a86e67826c87a0070e98789 /drivers/net/s2io.h
parent3a3d5756ac552ee2d2cca6ba0912f0ff328e8357 (diff)
downloadop-kernel-dev-6cfc482b4b1c512d81712eba41fa324b24e5e7b2.zip
op-kernel-dev-6cfc482b4b1c512d81712eba41fa324b24e5e7b2.tar.gz
S2io: Multiqueue network device support - FIFO selection based on L4 ports
- Resubmit #2 - Transmit fifo selection based on TCP/UDP ports. - Added tx_steering_type loadable parameter for transmit fifo selection. 0x0 NO_STEERING: Default FIFO is selected. 0x1 TX_PRIORITY_STEERING: FIFO is selected based on skb->priority. 0x2 TX_DEFAULT_STEERING: FIFO is selected based on L4 Ports. Signed-off-by: Surjit Reang <surjit.reang@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/s2io.h')
-rw-r--r--drivers/net/s2io.h34
1 files changed, 33 insertions, 1 deletions
diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index fdc0a94..5e351c0 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -360,7 +360,10 @@ struct stat_block {
#define MAX_TX_FIFOS 8
#define MAX_RX_RINGS 8
-#define FIFO_DEFAULT_NUM 1
+#define FIFO_DEFAULT_NUM 5
+#define FIFO_UDP_MAX_NUM 2 /* 0 - even, 1 -odd ports */
+#define FIFO_OTHER_MAX_NUM 1
+
#define MAX_RX_DESC_1 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 127 )
#define MAX_RX_DESC_2 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 85 )
@@ -379,6 +382,8 @@ static int fifo_map[][MAX_TX_FIFOS] = {
{0, 1, 2, 3, 4, 5, 6, 7},
};
+static u16 fifo_selector[MAX_TX_FIFOS] = {0, 1, 3, 3, 7, 7, 7, 7};
+
/* Maintains Per FIFO related information. */
struct tx_fifo_config {
#define MAX_AVAILABLE_TXDS 8192
@@ -431,6 +436,12 @@ struct config_param {
/* Tx Side */
u32 tx_fifo_num; /*Number of Tx FIFOs */
+ /* 0-No steering, 1-Priority steering, 2-Default fifo map */
+#define NO_STEERING 0
+#define TX_PRIORITY_STEERING 0x1
+#define TX_DEFAULT_STEERING 0x2
+ u8 tx_steering_type;
+
u8 fifo_mapping[MAX_TX_FIFOS];
struct tx_fifo_config tx_cfg[MAX_TX_FIFOS]; /*Per-Tx FIFO config */
u32 max_txds; /*Max no. of Tx buffer descriptor per TxDL */
@@ -895,6 +906,27 @@ struct s2io_nic {
*/
int rx_csum;
+ /* Below variables are used for fifo selection to transmit a packet */
+ u16 fifo_selector[MAX_TX_FIFOS];
+
+ /* Total fifos for tcp packets */
+ u8 total_tcp_fifos;
+
+ /*
+ * Beginning index of udp for udp packets
+ * Value will be equal to
+ * (tx_fifo_num - FIFO_UDP_MAX_NUM - FIFO_OTHER_MAX_NUM)
+ */
+ u8 udp_fifo_idx;
+
+ u8 total_udp_fifos;
+
+ /*
+ * Beginning index of fifo for all other packets
+ * Value will be equal to (tx_fifo_num - FIFO_OTHER_MAX_NUM)
+ */
+ u8 other_fifo_idx;
+
/* after blink, the adapter must be restored with original
* values.
*/
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